cert_blaster.sh

# Self-signed certificate generator for AWS by Dagen Brock
#  The basic instructions come from Amazon:
#  https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/configuring-https-ssl.html
#
# Specifically, you can generate a cert with these 3 commands:
#    openssl genrsa 2048 > privatekey.pem
#    openssl req -new -key privatekey.pem -out csr.pem
#    openssl x509 -req -days 365 -in csr.pem -signkey privatekey.pem -out server.crt
#
# This script walks you through generation and puts them in your specified output dir. 
#
# Call the script like this:
#    ./cert-blaster.sh mywebsite
# 
# Follow the prompts and it will output your certs in `mywebsite` 

#!/bin/bash

if [ "$#" -ne 1 ]; then
    echo "Illegal number of parameters"
    exit
fi
args=("$@")
DIR=${args[0]}
if [ -d "$DIR" ]; then
  echo "$DIR exists.  Won't overwrite. Aborting..."
  exit 1
fi
mkdir -p $DIR ; cd $DIR
PKEY=privatekey-$DIR.pem
CSR=csr-$DIR.pem
CERT=server-$DIR.crt

openssl genrsa 2048 > $PKEY
openssl req -new -key $PKEY -out $CSR
openssl x509 -req -days 365 -in $CSR -signkey $PKEY -out $CERT

cd ..
echo "Listing $DIR/"
echo "---------------"
ls -al $DIR